Beading-tool for boiler-tubes.



H. E. BUSH.

BEADING TOOL FOR BOILER TUBES.

APPLICATION HLED JUNE 9. 1915.

1 ,1 62,681. Patented Nov. 30, 1915.

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HOWARD E. BUSH, 0F JACKSON, MICHIGAN,

SHERWOOD AND ONE-THIRD T0 PETER MICHIGAN.

OFFKQE,

ASSIGNOR OF ONE-THIRD TO INEZ EVA EDWARD MoINTOSI-I, OF KALAMAZOO,

BEADINGr-TOOL FOR BOILER-TUBES.

Specification of Letters Patent.

Patented Nov. 30, 1915.

Application filed June 9, 1915. Serial No. 33,069.

To all whom it may concern:

Be it known that I, HOWARD E. BUSH, a citizen of the United States,residing at Jackson, in the county of Jackson and State of Michigan,have invented certain new and useful Improvements in Beading-Tools forBoiler-Tubes, of which the following is a specification.

This invention contemplates an improved beading tool for boiler tubesand has as its primary object to provide a device of this character soconstructed that the tool cannot be applied to the work in other thanthe proper manner and wherein the tool, when so applied, will beproperly guided to engage the work, to thus produce a tool which may beemployed by personseven though unskilled in the manipulation thereof.

The invention has as a further object to provide a tool so formed thatit will be impossible when the tool is applied to a boiler tube to calkthe tube or fine out of the tube sheet and will also be impossible tocut the sheet.

A still further object of the invention is to provide a tool of thischaracter so formed that, in use, the tool, when applied to one end ofthe tube, cannot be accidentally forced into the tube to either becomewedged therein or to pass entirely through the tube to possibly injureworkmen at the opposite end thereof.

Other and incidental objects will appear as the description proceeds andin the drawings wherein I have illustrated the preferred embodiment ofthe invention and wherein similar reference numerals designatecorresponding parts throughout the several views, Figure 1 is a sideelevation showing my improved tool applied to a conventional type ofboiler tube and sheet which is illustrated in section, and Fig. 2 is aperspective view of the tool.

Referring now more particularly to the drawings, my improved toolincludes a preferably hexagonal anvil shank 10 which is reduced at oneend as at 11, to receive a power hammer conventionally shown in Fig. 1of the drawings at 12. The shank 10 may, of course, be of any desiredlength and at its extremity opposite the reduced portion 11, is providedwith a longitudinally extending laterally directed arm or toe 13.

The shank 10 as will be observed, is reduced to provide the toe 13,which is preferably longitudinally curved throughout its length. Formedon the shank 10, at the juncture of the toe 13 therewith and arrangedcontiguous to the convex side of the toe, 1s a laterally directedshoulder or heel 14 whlch extends forwardly and laterally relative tothe shank and in a direction opposite to the toe 13. The shank 10 isalso somewhat reduced to provide the shoulder or heel 1 1 which isformed with an inner concave working face 15, the face 15 merginggradually at one extremity thereof, into the convex face of the toe 13.It will thus be seen that the heel 1%, in conjunction with the concaveworking face 15, constitutes the beading member of the tool. Theterminal Working face 16 of the toe is arranged substantially parallelto the longitudinal axis of the shank 10 while the outer end face 17 ofthe shoulder or heel l4 slopes laterally and rearwardly away from thetoe.

' Referring now more particularly to Fig. 1 of the drawings, I haveshown my improved tool applied to a conventional type of boiler tube orflue 16 having one end thereof extending through an ordinary flue sheet17 The tool is engaged with the tube 16, with the toe 13 thereofextending Within the tube to engage the wall thereof upon one side ofthe tube and with the shoulder or toe 14 engaging over the adjacent endedge of the tube upon the side thereof opposite the point of engagementof the toe 13. The power may then be applied to the tool in the usualmanner to cause the working face 15 of the shoulder or heel 141 tooverturn or form the bead upon the adj acent end of the tube, the beadbeing conventionally illustrated at 18.

articular attention is now directed to the fact that the tool can onlybe applied to the work with the toe 13 extending within the tube toengage the wall thereof as shown in Fig. 1 of the drawings.Consequently, persons even though unskilled in the use of the tool,cannot employ it in use, in other than the proper manner. Furthermore,it will be seen that the toe 13 is adapted to guide the tool as the heel14 is passed cir' cumferentially around the adj acent end edge of thetube to form the head 18, so that the head will be uniform, while theshoulder 14 will bear laterally over the adjacent end edge of the tubeto prevent the tube from being calked out of the sheet, or in otherwords, to prevent the adjacent end of the tube from being forced out ofthe opening in the flue sheet 17. It will be observed that, when thebeading member is in operative position with the toe in contact with theinner wall of the flue, the anvil shankwill be in parallelism with theaxis of the flue and thus permit a direct blow from the hammer to betransmitted through the shank to the heading member. In this connection,it is to be observed that the face 17 of the shoulder or heel ll is soarranged that when the tool is applied to the work, the said face willslope away from the flue sheet making it impossible, owing to theengagement of the toe 13 within the tube, to tilt the tool from thehorizontal to a position where the said face of the shoulder will engagethe flue sheet to either cut the sheet or force the sheet under the beadto form a bur such as would make it impossible to form a tight jointbetween'the tube and the sheet and consequently result in leakage.

As is well known, beading tools as now upon the market are of suchnature that, when applied to the work, they may be so held as tonot onlycut the flue sheet but also act to force the sheet under the head of thetube or flue to form a bur which is very detrimental to the flue since,when this bur is once formed, it then becomes impossible to secure thetube or flue sufficiently tight within the opening in the flue sheet toprevent leakage. This is one of the worst disadvantages experienced withbeading tools as now in common use and the important advantages of thepresent invention will, therefore, be readily appreciated since myimproved tool will not only prevent the cutting of the flue sheet,thereby prolonging the wear of the sheet, but is also so formed that itwill be impossible to drive the sheet under the head of the flue to forma bur Copies of this patent may be obtained for which inevitably resultsin leakage. Furthermore, beading tools as now in common "use, have atendency to draw out .on the: flue making it thinner at the sheet'whichalso consequently results in leakage. Moreover, this drawing out of theflue also leaves a ragged edge on the bead which has to be trimmed atregular periods. These undesirable features are also overcome in thepresent invention in that the tool cannot be applied to the work inother than the proper manner.-

From the foregoing description, it will be seen that owing to thedisposition of the toe l3 and heel 14L upon the anvil shank'of the tool,it will be impossible for theltool to become wedged within the flue orto pass entirely through the tube or flue to cause possible injury topersons working upon the opposite end of the tube.

vHaving thus described my invention, what I claim and desire to secureby Letters Patent is 1. A tool of the class described comprising ananvilshankhaving a beading member and a toe laterally projecting from theheading member and adapted, when inserted into a flue, to engage withitstoe the inner wall of the flue diametrically opposite the point ofapplication of the beading mem-, her when the latter is in operativeposition.

2. A tool ofthe class described comprising an anvil. shank having abeading memher and a toe laterally projecting from the heading memberand adapted, when in-- sorted into a flue, to engage with its toe theinner wall of the flue diametrically opposite the point of applicationof the beading member when the anvil shank is in parallelism with theaxis of theflue and the beading member is in operative position;

In testimony whereof I aflix' my signatu e.

HOWARD E, BUSH. [L. s]

Washington, D. 0'1"

